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wordWrap javascript Code Snippet in 2024

stringregexpintermediate

Last Updated: 15 July 2024

Wraps a string to a given number of characters using a string break character.

  • Use String.prototype.replace() and a regular expression to insert a given break character at the nearest whitespace of max characters.
  • Omit the third argument, br, to use the default value of '\n'.
const wordWrap = (str, max, br = '\n') => str.replace( new RegExp(`(?![^\\n]{1,${max}}$)([^\\n]{1,${max}})\\s`, 'g'), '$1' + br );
wordWrap( 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Fusce tempus.', 32 ); // 'Lorem ipsum dolor sit amet,\nconsectetur adipiscing elit.\nFusce tempus.' wordWrap( 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. Fusce tempus.', 32, '\r\n' ); // 'Lorem ipsum dolor sit amet,\r\nconsectetur adipiscing elit.\r\nFusce tempus.'

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